Long-term dynamics of mycorrhizal root tips in a loblolly pine forest grown with free-air CO2 enrichment and soil N fertilization for 6 years.
Identifieur interne : 001A76 ( Main/Corpus ); précédent : 001A75; suivant : 001A77Long-term dynamics of mycorrhizal root tips in a loblolly pine forest grown with free-air CO2 enrichment and soil N fertilization for 6 years.
Auteurs : Seth G. Pritchard ; Benton N. Taylor ; Emily R. Cooper ; Katilyn V. Beidler ; Allan E. Strand ; M Luke Mccormack ; Siyao ZhangSource :
- Global change biology [ 1365-2486 ] ; 2014.
English descriptors
- KwdEn :
- Carbon Dioxide (MeSH), Ecosystem (MeSH), Fertilizers (MeSH), Mortality (MeSH), Mycorrhizae (growth & development), Nitrogen (MeSH), North Carolina (MeSH), Pinus taeda (MeSH), Plant Roots (growth & development), Plant Roots (microbiology), Soil (chemistry), Soil Microbiology (MeSH), Trees (growth & development), Trees (microbiology).
- MESH :
- chemical , chemistry : Soil.
- chemical : Carbon Dioxide, Fertilizers, Nitrogen.
- growth & development : Mycorrhizae, Plant Roots, Trees.
- microbiology : Plant Roots, Trees.
- Ecosystem, Mortality, North Carolina, Pinus taeda, Soil Microbiology.
Abstract
Large-scale, long-term FACE (Free-Air CO2 enrichment) experiments indicate that increases in atmospheric CO2 concentrations will influence forest C cycling in unpredictable ways. It has been recently suggested that responses of mycorrhizal fungi could determine whether forest net primary productivity (NPP) is increased by elevated CO2 over long time periods and if forests soils will function as sources or sinks of C in the future. We studied the dynamic responses of ectomycorrhizae to N fertilization and atmospheric CO2 enrichment at the Duke FACE experiment using minirhizotrons over a 6 year period (2005-2010). Stimulation of mycorrhizal production by elevated CO2 was observed during only 1 (2007) of 6 years. This increased the standing crop of mycorrhizal tips during 2007 and 2008; during 2008, significantly higher mortality returned standing crop to ambient levels for the remainder of the experiment. It is therefore unlikely that increased production of mycorrhizal tips can explain the lack of progressive nitrogen limitations and associated increases in N uptake observed in CO2 -enriched plots at this site. Fertilization generally decreased tree reliance on mycorrhizae as tip production declined with the addition of nitrogen as has been shown in many other studies. Annual NPP of mycorrhizal tips was greatest during years with warm January temperatures and during years with cool spring temperatures. A 2 °C increase in average late spring temperatures (May and June) decreased annual production of mycorrhizal root tip length by 50%. This has important implications for ecosystem function in a warmer world in addition to potential for forest soils to sequester atmospheric C.
DOI: 10.1111/gcb.12409
PubMed: 24123532
Links to Exploration step
pubmed:24123532Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Long-term dynamics of mycorrhizal root tips in a loblolly pine forest grown with free-air CO2 enrichment and soil N fertilization for 6 years.</title><author><name sortKey="Pritchard, Seth G" sort="Pritchard, Seth G" uniqKey="Pritchard S" first="Seth G" last="Pritchard">Seth G. Pritchard</name><affiliation><nlm:affiliation>Department of Biology, College of Charleston, Charleston, SC, 29424, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Taylor, Benton N" sort="Taylor, Benton N" uniqKey="Taylor B" first="Benton N" last="Taylor">Benton N. Taylor</name></author><author><name sortKey="Cooper, Emily R" sort="Cooper, Emily R" uniqKey="Cooper E" first="Emily R" last="Cooper">Emily R. Cooper</name></author><author><name sortKey="Beidler, Katilyn V" sort="Beidler, Katilyn V" uniqKey="Beidler K" first="Katilyn V" last="Beidler">Katilyn V. Beidler</name></author><author><name sortKey="Strand, Allan E" sort="Strand, Allan E" uniqKey="Strand A" first="Allan E" last="Strand">Allan E. Strand</name></author><author><name sortKey="Mccormack, M Luke" sort="Mccormack, M Luke" uniqKey="Mccormack M" first="M Luke" last="Mccormack">M Luke Mccormack</name></author><author><name sortKey="Zhang, Siyao" sort="Zhang, Siyao" uniqKey="Zhang S" first="Siyao" last="Zhang">Siyao Zhang</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24123532</idno><idno type="pmid">24123532</idno><idno type="doi">10.1111/gcb.12409</idno><idno type="wicri:Area/Main/Corpus">001A76</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001A76</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Long-term dynamics of mycorrhizal root tips in a loblolly pine forest grown with free-air CO2 enrichment and soil N fertilization for 6 years.</title><author><name sortKey="Pritchard, Seth G" sort="Pritchard, Seth G" uniqKey="Pritchard S" first="Seth G" last="Pritchard">Seth G. Pritchard</name><affiliation><nlm:affiliation>Department of Biology, College of Charleston, Charleston, SC, 29424, USA.</nlm:affiliation></affiliation></author><author><name sortKey="Taylor, Benton N" sort="Taylor, Benton N" uniqKey="Taylor B" first="Benton N" last="Taylor">Benton N. Taylor</name></author><author><name sortKey="Cooper, Emily R" sort="Cooper, Emily R" uniqKey="Cooper E" first="Emily R" last="Cooper">Emily R. Cooper</name></author><author><name sortKey="Beidler, Katilyn V" sort="Beidler, Katilyn V" uniqKey="Beidler K" first="Katilyn V" last="Beidler">Katilyn V. Beidler</name></author><author><name sortKey="Strand, Allan E" sort="Strand, Allan E" uniqKey="Strand A" first="Allan E" last="Strand">Allan E. Strand</name></author><author><name sortKey="Mccormack, M Luke" sort="Mccormack, M Luke" uniqKey="Mccormack M" first="M Luke" last="Mccormack">M Luke Mccormack</name></author><author><name sortKey="Zhang, Siyao" sort="Zhang, Siyao" uniqKey="Zhang S" first="Siyao" last="Zhang">Siyao Zhang</name></author></analytic><series><title level="j">Global change biology</title><idno type="eISSN">1365-2486</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon Dioxide (MeSH)</term><term>Ecosystem (MeSH)</term><term>Fertilizers (MeSH)</term><term>Mortality (MeSH)</term><term>Mycorrhizae (growth & development)</term><term>Nitrogen (MeSH)</term><term>North Carolina (MeSH)</term><term>Pinus taeda (MeSH)</term><term>Plant Roots (growth & development)</term><term>Plant Roots (microbiology)</term><term>Soil (chemistry)</term><term>Soil Microbiology (MeSH)</term><term>Trees (growth & development)</term><term>Trees (microbiology)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Soil</term></keywords><keywords scheme="MESH" type="chemical" xml:lang="en"><term>Carbon Dioxide</term><term>Fertilizers</term><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Mycorrhizae</term><term>Plant Roots</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Plant Roots</term><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Ecosystem</term><term>Mortality</term><term>North Carolina</term><term>Pinus taeda</term><term>Soil Microbiology</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Large-scale, long-term FACE (Free-Air CO2 enrichment) experiments indicate that increases in atmospheric CO2 concentrations will influence forest C cycling in unpredictable ways. It has been recently suggested that responses of mycorrhizal fungi could determine whether forest net primary productivity (NPP) is increased by elevated CO2 over long time periods and if forests soils will function as sources or sinks of C in the future. We studied the dynamic responses of ectomycorrhizae to N fertilization and atmospheric CO2 enrichment at the Duke FACE experiment using minirhizotrons over a 6 year period (2005-2010). Stimulation of mycorrhizal production by elevated CO2 was observed during only 1 (2007) of 6 years. This increased the standing crop of mycorrhizal tips during 2007 and 2008; during 2008, significantly higher mortality returned standing crop to ambient levels for the remainder of the experiment. It is therefore unlikely that increased production of mycorrhizal tips can explain the lack of progressive nitrogen limitations and associated increases in N uptake observed in CO2 -enriched plots at this site. Fertilization generally decreased tree reliance on mycorrhizae as tip production declined with the addition of nitrogen as has been shown in many other studies. Annual NPP of mycorrhizal tips was greatest during years with warm January temperatures and during years with cool spring temperatures. A 2 °C increase in average late spring temperatures (May and June) decreased annual production of mycorrhizal root tip length by 50%. This has important implications for ecosystem function in a warmer world in addition to potential for forest soils to sequester atmospheric C. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24123532</PMID><DateCompleted><Year>2015</Year><Month>05</Month><Day>11</Day></DateCompleted><DateRevised><Year>2017</Year><Month>11</Month><Day>16</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1365-2486</ISSN><JournalIssue CitedMedium="Internet"><Volume>20</Volume><Issue>4</Issue><PubDate><Year>2014</Year><Month>Apr</Month></PubDate></JournalIssue><Title>Global change biology</Title><ISOAbbreviation>Glob Chang Biol</ISOAbbreviation></Journal><ArticleTitle>Long-term dynamics of mycorrhizal root tips in a loblolly pine forest grown with free-air CO2 enrichment and soil N fertilization for 6 years.</ArticleTitle><Pagination><MedlinePgn>1313-26</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/gcb.12409</ELocationID><Abstract><AbstractText>Large-scale, long-term FACE (Free-Air CO2 enrichment) experiments indicate that increases in atmospheric CO2 concentrations will influence forest C cycling in unpredictable ways. It has been recently suggested that responses of mycorrhizal fungi could determine whether forest net primary productivity (NPP) is increased by elevated CO2 over long time periods and if forests soils will function as sources or sinks of C in the future. We studied the dynamic responses of ectomycorrhizae to N fertilization and atmospheric CO2 enrichment at the Duke FACE experiment using minirhizotrons over a 6 year period (2005-2010). Stimulation of mycorrhizal production by elevated CO2 was observed during only 1 (2007) of 6 years. This increased the standing crop of mycorrhizal tips during 2007 and 2008; during 2008, significantly higher mortality returned standing crop to ambient levels for the remainder of the experiment. It is therefore unlikely that increased production of mycorrhizal tips can explain the lack of progressive nitrogen limitations and associated increases in N uptake observed in CO2 -enriched plots at this site. Fertilization generally decreased tree reliance on mycorrhizae as tip production declined with the addition of nitrogen as has been shown in many other studies. Annual NPP of mycorrhizal tips was greatest during years with warm January temperatures and during years with cool spring temperatures. A 2 °C increase in average late spring temperatures (May and June) decreased annual production of mycorrhizal root tip length by 50%. This has important implications for ecosystem function in a warmer world in addition to potential for forest soils to sequester atmospheric C. </AbstractText><CopyrightInformation>© 2013 John Wiley & Sons Ltd.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Pritchard</LastName><ForeName>Seth G</ForeName><Initials>SG</Initials><AffiliationInfo><Affiliation>Department of Biology, College of Charleston, Charleston, SC, 29424, USA.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Taylor</LastName><ForeName>Benton N</ForeName><Initials>BN</Initials></Author><Author ValidYN="Y"><LastName>Cooper</LastName><ForeName>Emily R</ForeName><Initials>ER</Initials></Author><Author ValidYN="Y"><LastName>Beidler</LastName><ForeName>Katilyn V</ForeName><Initials>KV</Initials></Author><Author ValidYN="Y"><LastName>Strand</LastName><ForeName>Allan E</ForeName><Initials>AE</Initials></Author><Author ValidYN="Y"><LastName>McCormack</LastName><ForeName>M Luke</ForeName><Initials>ML</Initials></Author><Author ValidYN="Y"><LastName>Zhang</LastName><ForeName>Siyao</ForeName><Initials>S</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2014</Year><Month>02</Month><Day>12</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Glob Chang Biol</MedlineTA><NlmUniqueID>9888746</NlmUniqueID><ISSNLinking>1354-1013</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance UI="D005308">Fertilizers</NameOfSubstance></Chemical><Chemical><RegistryNumber>0</RegistryNumber><NameOfSubstance 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MajorTopicYN="Y">Nitrogen</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D009657" MajorTopicYN="N">North Carolina</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D041603" MajorTopicYN="N">Pinus taeda</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D018517" MajorTopicYN="N">Plant Roots</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="Y">growth & development</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012987" MajorTopicYN="N">Soil</DescriptorName><QualifierName UI="Q000737" MajorTopicYN="N">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012988" MajorTopicYN="N">Soil Microbiology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="N">Trees</DescriptorName><QualifierName UI="Q000254" MajorTopicYN="N">growth & development</QualifierName><QualifierName UI="Q000382" MajorTopicYN="Y">microbiology</QualifierName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">fine roots</Keyword><Keyword MajorTopicYN="N">free-air CO2 enrichment</Keyword><Keyword MajorTopicYN="N">minirhizotron</Keyword><Keyword MajorTopicYN="N">mycorrhiza</Keyword><Keyword MajorTopicYN="N">net primary productivity (NPP)</Keyword><Keyword MajorTopicYN="N">progressive nitrogen limitation</Keyword><Keyword MajorTopicYN="N">root turnover</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2013</Year><Month>07</Month><Day>03</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2013</Year><Month>08</Month><Day>21</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2013</Year><Month>10</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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